API SPEC 10A-2010 pdf free download

API SPEC 10A-2010 pdf free download.Specification for Cements and Materials for Well Cementing.
3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 additive material added to a cement slurry to modify or enhance some desired property NOTE Properties that are commonly modified include setting time (by use of retarders or accelerators), fluid loss, viscosity, etc. 3.2 atmospheric pressure consistometer device used for stirring and conditioning the cement slurry NOTE The device is not intended to measure thickening time. 3.3 Bearden unit of consistency B c measure of the consistency of a cement slurry when determined on a pressurized consistometer 3.4 cement Portland cement ground clinker generally consisting of hydraulic calcium silicates and aluminates and usually containing one or more forms of calcium sulfate as an interground additive 3.5 cement class designation achieved under the ISO system for classification of well cement according to its intended use 3.6 cement grade designation achieved under the ISO system for denoting the sulfate resistance of a particular cement 3.7 cement blend mixture of dry cement and other dry materials 3.8 clinker fused materials produced in the kiln during cement manufacturing that are interground with calcium sulfate to make cement
3.9 compressive strength force per unit area required to cause a set cement sample to fail under compression 3.10 consistometer device used to measure the thickening time of a cement slurry under temperature and under pressure 3.11 filtrate liquid that is forced out of a cement slurry during a fluid loss test 3.12 free fluid coloured or colourless liquid that separates from a cement slurry under static conditions 3.13 slurry container slurry cup container in an atmospheric or pressurized consistometer used to hold the slurry for conditioning purposes or for the thickening-time test 3.14 thickening time time after which the consistency of a cement slurry has become so high that the slurry is considered unpumpable NOTE The results of a thickening-time test provide an indication of the length of time a cement slurry remains pumpable under the test conditions. 4 Requirements 4.1 Specification, chemical and physical requirements 4.1.1 Classes and grades 4.1.1.1 General Well cement shall be specified using classes A, B, C, D, G and H and the grades: ordinary (O), moderate sulfate- resistant (MSR) and high sulfate-resistant (HSR). A well cement that has been manufactured and supplied in accordance with this part of ISO 10426 may be mixed and placed in the field using water ratios or additives at the user’s discretion. It is not intended that manufacturing compliance with this part of ISO 10426 be based on such field conditions. Processing additives, set modifying agents or chemical additives used to reduce chromium (VI) shall not prevent a well cement from performing its intended functions.
4.1.1.3 Class B This product is obtained by grinding clinker, consisting essentially of hydraulic calcium silicates, usually containing one or more forms of calcium sulfate as an interground additive. At the option of the manufacturer, processing additives may be used in the manufacture of class B cement, provided that such materials in the amounts used have been shown to meet the requirements of ASTM C465. This product is intended for use when conditions require moderate or high sulfate resistance and is available in both MSR and HSR grades, similar to ASTM C150, type II. 4.1.1.4 Class C This product is obtained by grinding clinker, consisting essentially of hydraulic calcium silicates, usually containing one or more forms of calcium sulfate as an interground additive. At the option of the manufacturer, processing additives may be used in the manufacture of class C cement, provided that such materials in the amounts used have been shown to meet the requirements of ASTM C465. This product is intended for use when conditions require high, early strength and is available in O, MSR and HSR grades, similar to ASTM C150, type III.